Calculating-machine.



No. 853,718. PATENTBD JULY 21, 19081 J. G. WAHL.

CALCULATING MACHINE.

APPLICATION FILED APR. 17, 1905.

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PATENTED JULY 21, 1908.

J. G. WAHL.

CALCULATING MACHINE.

APPLICATION FILED APR.17. 1905.

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No. 893,718. PATENTED JULY 21, 1908.

J. G. WA'HL.

OALGULATING MACHINE.

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N0- 893,718. PATBNTED JULY 21, 1908.

I. c. WAHL.

CALCULATING MACHINE.

APPLICATION FILED APR.17, 1905.

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No. 893,718. PATBNTED JULY 21, 1908. J. G. WAHL.

- CALCULATING MACHINE.

APPLICATION FILED APR.17, 1905.

5 SHEETSSHEET 5.

Wiinssssa: 111v Emmy Jmtm BuWahi azmzwm Bragg UNITED STATES PATENT OFFICE.

JOHN C. WAHL, OF CHICAGO, ILLINOIS, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO WAHL ADDING MACHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

CALCULATING-MACHINE.

Specification of Letters Patent.

Patented July 21, 1908. I

Application filed Aprilv 17; 1905. Serial No. 256,141.

To all whom it mag concerns.

Be 1t known that I, JOHN C. WAHL, citizen 7 of the United States, residing at Chicago, in

- following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification. I

My invention relates to calculating devicesand more particularly to compact calculating devicesadapted forseparable attachment to typewriting machines for automatically performing calculations.

The device of my invention is more partlcularly adapted for calculations of addition and subtraction and may be directly ass0' mated with the number ke s of any make of typ ewr1ting machine and with the escapement carnage, and upon actuation of the keys the corresponding numbers will be printed upon the sheet and simultaneously registered on the indicator, and at the end of a calculation the desired result will be printed on the sheet and also shown on the indicator. A totalizer frame with a desired number of totalizer wheels is suitably connected with the escapement. carriage upon travel of which the totalizer frame is horizontally moved across the front :ofthe typewriting machine. Driving mechanism for actuating successive totalizer wheels is mounted below the totalizer frame and suitably connected with the number keys, this driving mechan ism being relatively stationary. When a calculation is to be performed, such as addition for instance, a proper starting position for the carriage is set in a manner well known,

and upon striking of the number and spacing. keys the numbers of one sum are placed on the totalizer, and simultaneously on the sheet, whereupon the carriage is moved again to its initial position and the next sum accumulated on the totalizer and laced on the sheet in proper order below the rst number and so on, and at the end of the calculation the sum total of all the numbers will be indicated on the totalizer. Reversing mechanism is rovided for the device to reverse the IOttltlOIl thereof u on actuation of the number keys, and the evice being set to the reverse or subtracting position the operator strikesoif on the keys the sum total indi 'cated 011 the totalizer. "lhis sum total will extend over several numbers.

ticularly true in the totalizer wheel actuating umn of sums added, but, owing to the ref verse movement of the totalizer wheels, these will be returned to the zero position, and when the device is again set for forward rotation it will be in condition for another calculation. I

Upon striking of the keys great momentum is given the operative and actuating parts, and heretofore in calculating machines the great trouble has been the tendency for these parts tomove farther than desired, the result being that instead of the totalizer wheels rotating the desired distance to indicate the desired number, these wheels will rotate beyond the desired number and the totalizer will not agree with the numbers printed on the sheet. Many mechanisms and arrangements have been proposed for remedying these inefficiencies but have not met with very much success, and one of the main objects of my invention is to provide abso lutely reliable locking mechanism, which under all conditions, will prevent over-rotationof the parts and will cause them to be moved precisely as desired. In such devices also much error may result owingto lost motion, an as the interrelated mechanisms 1n devlces Ike this must necessarll be more or less numerous, any error wil be multiplied when it reaches thetotalizer inappear in proper order at the foot of the 051-,

dicating wheels and may be suflicient to This is parmechanisms themselves. It is well known that in a totalizer certain oints. may be reached at which all the totaizer wheels'will' move at the same time upon actuation of one of the wheels, and if there is any lost motion between the adjoining mechanisms the error will be very greatly multiplied. Another feature of my invention, therefore, is the provision of apparatus so constructed and arranged as to reduce lost motion to a minimum. i

My invention also comprises several arrangements tending to prevent the occurrence of false actuations of the keys and other apparatus/and also includes other features of construction and arrangement,

all of which will be best understood by reference to the accom an ying drawings, in which Figure 1 is a si e elevation of a typewriting machine showing the calculator attachment associated therewith. Fig. 2 is a front elevation of the typewriting machine with the calculating mechanism attached. Fig. 3.is a detached view of the calculating mechanism and actuating mechanism therefor, arts being shown in section and parts eing broken away for clearness. Fig. 4 is a view similar to Fig. 3 showing the apparatus in a different operative position. Fig. 5 is a front view ofthe partsshown in Figs. 3 and 4. Fig. 6 is a detached side view of the main driving member showing its attachment to an actuating shaft. Fig. 7 is a detached view of the totalizer frame showing the manner of arrangement and operation of the total izer mechanisms, parts being removed for clearness. Figs. 8, 9 and 10 show sectional views of levers for causing movements of different parts to be disengaged. Fig. 11 is a detached view of the adjusting rack for the tabulating mechanism. Fig. 12 shows detent .lever for engaging the first gear of the totalizer, and Fig. 13 is a detached view showing a'suitable attachment between two actuating members.

Like reference characters refer to like parts throughout the various figures.

I have shown my device attached to a well known Remington typewriting machine, although it may be attached with equal facility to other machines. A horizontal supporting bar 1 is secured to hangers 2-2 fastened to the frame 3' of the typewriter by means of screws 44 .as best shown in Fig. 2. This frame has an upper and a lower raceway or track 5 and 6 respectively ada ted to be engaged by upperrollers 7 and ower rollers 8 pivoted from shafts 9 extending from the ack of the totalizer supporting frame 10. This frame is thus ada ted for longitudinal travel along the track ar 1 and the arm 11 connects with this frame and with a bar 12 secured to the typewriter carriage. This bar' 12 extends u wardly and rearwardly along the sides 0 the typewriter as best shown in Fig. 1, and its rear end is secured to the stationary part 13 of the carriage by means of screws 14. As the typewriter carriage moves across the machine, the frame 10 is carried therewith, and, owing to this manner of attaching the rod 1 2' to the stationary part of the carriage, the front part of the carriage sup orting the type roller may be swung wit out 1n any way interfering with the totalizers. The end of the arm 11 is adapted for separable enga ement with the lower end of the bar 12 an thus the calcu-' l ating attachment may be entirely separated from the ty ewriting machine which may then be use in its ordinary capacity. For this urpose the end of the arm 11 is provided with a rotatable cap 15 having a knurled thumb head 16 and a lateral pro ec'- tion or tongue 17 for engagement in a groove or slot 18 at the forward end of the bar 12.

, When the calculating device is to be utilanism.

The upper and lower edges of the traveling supporting frame 10 are provided with V-shaped guideways or channels 19 and 20, and a totalizer frame 21 has side walls 22 and 23 and provided at their rear, upper and lower edges with V-shaped tongues or projections 24 and 25 for engaging in the channels 19 and 20. This totalizer frame is thus adjustable horizontally along the traveling supporting frame or bar 10, and as the carriage escapes this totalizer frame will be carried across the front of themachine with the traveling supporting bar. .To secure the totalizer frame in any adjusted position on the traveling bar a locking lever 26 is pivoted to one of theside walls of the totalizer frame and its end 27 is adapted for engagement in any of the slots 28 out along the top front edge of the traveling frame 10. These slots are scaled to correspond to the spacing distances of the typewriting machine so that the starting point .of the totalizer may agree with that of the typewriter.

As will be more fully described later, a plurality of totalizer gear wheels 121 are ivoted in a horizontal row within the tota izer frame, these gears bein suitably connected with the indicating num er wheels and other mechanisms. Depending from the bar 1 are arms 30 and 31 terminating respectively in vertical side plates 32 and 33, the arms being also connected by a vertical su porting plate 34. At about the center of t is supporting plate 34 is mounted the driving frame 35 consisting of the side plates 36 and 37 which may be secured to the supporting late 34 by the screws 38. Pivoted in the top forward end of the side plates is a shaft 39 supporting the gear wheel 40. To the rear of the shaft 39 is pivoted another shaft 41hu on which ispivoted the gear wheel 42 w 10 wheel 40. Pivoted in the front end of the side lates 32 and 33 is an'actuating shaft 43 to which is attached a driving member 44 in the shape of a segmental gear ada ted to mesh either directly with the gear w eel 40 or with the gear-Wheel 42. Suitable switching mechanism, which will be more clearly illustrated hereafter, is rovided and is associated with the main riving member and the gear wheel 42. Upon actuation in one direction of this switchin mechanism the main driving member mesh with the gear wheel 40 only, and as this ear 40 is adapted to mesh with the tota izer gear wheels as the totalizer frame travels across the machine, these totalizer gear wheels will be given forward rotation, that is, the numat all times is in mesh with the gear bers on the nfimber wheels will rotate from smaller to larger numbers. Upon actuation of this switching mechanism in another direction the main driving gear will be in mesh with the gear wheel 42 only, and with this pivot shaft 45 to which are pivoted a plurality of actuating cam frames 46 in suitable position over the number keys of the typewriting machine, one of said cam frames being connected with each number key by an adjustable turn buckle 47, and thus upon actuation of any number'key the correspondingcam frame will-be rotated about the pivot shaft 45. An arm 48 extends forwardly from each cam frame and terminates in a cam surface 49.

ably positioned with respect to the actuating cam frames, andeach arm terminates in a cam post or roller 51 for engagement withthe cam surface of the corresponding cam frame. Upon depression of a number key the corresponding cam frame will be rotated and its cam surface moved in engagement with the corresplonding actuating arm to cause rotation-of the actuating shaftand of the main driving gear connected thereto. The rotation of the totalizer number wheels must correspond to the key depressed, that is, if

key 1 is depressed the corresponding-totalizer number wheel should be rotated 1 division, and-likewise if the key '9 is depressed the corresponding totalizer number wheel should be rotated 9 divisions and so on. The rotation, however, ofthe number wheels-will depend upon the arc of rotation of the main driving member, and the actuating arms are consequently regularly angularly displaced on the actuating shaft as'best shown in Figs. 3"and' 4. The actuating arm corresponding to key' 1 is so arranged that upon actuation of the key this arm will be rotated a distance sufficient to cause proper rotation of the main driving member to cause the corresponding number wheel to be rotated only one number. The actuating arm corresponding to.

key 2 will be slightly angularly displaced;

from actuating arm 1 to rotate the actuating shaft through a greater are upon actuation of key 2', and the number wheel engaged will be rotated two numbers. ing arms are proportionately displaced to cause the proper angular rotation of the main driving gear corresponding at all times to the number key depressed. To cause more regu- To the actuating shaft 43 are firmly .se-' cured a plurality of actuating arms 50 suit All the other actuat-- lar actuation of the actuating armsand to prevent over-actuation thereof due to the sudden imp act with the cam surfaceupon striking of the number keys, the cam arm is in the form of a goosene ck, (see Figs. 3 and 4) that is, the retaining arm 52 extends forwardly over the cam surface and thus confines the travel of the cam post or roller in engagement at all times with the cam surface;

Pivoted between the side plates 32 and 33- and disposed between the actuating shaft and the pivot shaft 45 is a locking shaft 53 from which extends a plurality of teeth '54, one for each cam frame.

upperedge with teeth 56 arranged in the arc of a circle having its center at the pivot shaft ax1s 56 is a depression 57, and when the cooperating "tooth 54 is in position, either above this depressionror beyond the other end of Each cam frame. has a wing-like projection 55 provided at its,

Between the cam arm 48 and the teeth 7 the tooth, the cam frame may be rotated.

However, upon part rotation of a cam frame in one direction the corresponding tooth Wlll engage the teeth and will prevent return of the cam frame from this intermediate position, it being necessary before the frame can be returned that it be rotated the entire distance, that is, to bring the teeth either to the depression 57 or beyond the other end of the teeth In this manner further operation of the calculating mechanism is prevented until the keys have been properly struck to carry the cam' frames beyond the locking point thereof bythe locking teeth. Aspring 58 connected with the lock shaft 53 and with a-stationary part of the framework tends to pre-v vent rotation of the lock shaft, .and thus serves to mesh. the locking teeth in engage-i ment with the teeth on the cam frames. v

As best shown in Figs. 5and 1 the actuating shaft, the locking shaft and the pivot shaft are maintained in alinement by the plate 59 to which is pivoted an adjustable stop *plate 60 having at its forward end an eccentric surface 61 which is engaged by one of the actuating arm cam shafts to limit the return rotation of the actuati shaft and mechanisms connected therewit upon. 'release of the number keys, the return of the shaft 43 to be accomplished by the spring 62' connected therewith and with the stationary frame at some point. This stop is shown as engaging the cam'post 63 extending from the actuating arm corresponding. to key number 6, the post .being elongated sufficiently, for this purpose. The position in which the actuating shaft is stopped can be adjusted by virtue of this eccentric cam surface. Extending from the side plate 36 of the driving frame is a pivot post 64 to the end of which is pivoted a pawl lever 65 having the pawl point 66'forengaging between the teeth of the reverse car 42.. A Weighted arm 67 extends from t e pawl arm, and a spring 68 connected with the supporting plate 34 and with the extension 69 from the pawl arm tends to maintain the pawl point 1n engagementwith the reverse -ear teeth, the weighted arm upon release of t e gawl frame providing lmomentum for this ever to insure its pro er enggagement with the reverse gear teet ,this 'elng best shown in Figs. 3 and 4. Above the "pivot post 64 is pivoted the rock shaft 70 between the side walls 36 and 37, and secured thereto is'a retainin arm 71 eX- tending forwardly and sidewar l'y into engagement with the projection 72 from the pawl arm. Also secured to-the rock shaft and extending downwardly therefrom is a lever 73 terminating at its-end in a ivot stud 74. Secured to the lock shaft 53 in position below the lever 73 is an upwardly extending arm 75 terminating at its free end in the pivot stud 76. A link member 77 has a slot 78 at its upper end and a slot 79 at its lower end engaged respectively by the pivot studs 74 and 76, a tension spring 80 being connected between the stud 74 and the extension 81 from the upper end of the link 77. With this arrangement and immediately upon rotation of a cam frame upon depression of a key the corresponding locking tooth on the lock shaft will be actuated to cause a slight rotation of the lock shaft and this rotary motion will be transmitted through the arm 75, link 77, lever 73, rock shaft 70 and detainin lever 71, whereupon the detaining lever wil be moved downwardly to rotate the pawl frame and thereby to disengage the pawl point from the reverse gear, and after this is done the cam surface of the actuated cam frame will engage the corresponding actuating arm to produce pro er rotation" of the main driving member.v lthough the slotted link 77 affords direct connection between the arm 75 and the lever 73 this connection is at all times more or less yielding on account of the spring 80, and the vibrations of the locking teeth as they engage the teeth on the cam frames are cushioned. The locking tooth actuated will engage the teeth on the cam frame until the cam surface has given the desired rotation to the actuating arm, and the tooth thereafter will be released from the cam frame, whereupon the locking shaft by means of the spring 58, and

' also partly by means of the springs 68 and 80, will be returned to itsnormal position, and the detaining lever and its actuating mechanism will also be returned to the normal position to release the pawl frame, whereby the pawl ointmay again enga e the reverse gear to ock the totalizer mec anism against actuation. Thus provision is made for absolutely locking the totalizer mechanism against actuation except upon active engagement of the cam surfaces with the actuating arms, and errors resulting from .atmg shaft by the rotatin over of the totalizer wheels is en;-

tirely e iminated.

Mechanism is also provided for allowing the driving gear to mesh with the forward or reverse gears only when the actuating shaft is rotated. For this purpose the main. driv ing wheel or segment is pivoted to the actupin 81, the pin assing through the shaft and through the hu 8 2 to which the drivinggear is secured. The bore of the hub is of greater diameter thanthe actuating shaft, but the shaft is enlarged within the bore and provided with a circular circumference to form a ball 83, thus forming a sort of ball and socket joint with the hub to allow the main driving member to be swung laterally. A sliding shaft 82 ada ted' to slide through openings in the side p ates 36 and 37 is provided and has a circumferential groove 83 engaging the circular slot 84 in the driving member. -Another slidin shaft 85 is ivoted in the side walls just slow the sli ing shaft '82 and to this sliding shaft a bell crank lever 86 is pivoted at its elbowb the pin 87. The upper end of this bell cran lever has a slot 88 en 'agin the stud 89 extending from the sli ing s aft 82, and the other end of this bell crank lever is pivoted to one end of the link 90 which at its other end has a slot 91 engaging the stud 92 extending from the arm 93 secured to and ex tending forwardly from the lockshaft. The

position of this mechanism with respect to the pawl frame moving mechanism is such that, both are actuated simultaneously iipon depression of a ke this causing primar' a rotation of the lock shaft to cause remova of the pawl frame from the reverse gear and also to cause rotation of the bell crank lever and a sliding of the shaft 82 to carry the main driving gear into connection with either the forward or reverse gear.

As best shown in Fig. 5, the spring 86' serves to hold the bell crank lever in position to maintain the shaft 82 toward the right, whereby the main drivin gear is out of mesh with either of the auxi iary driving gears. Upon rotation, however, of the locking shaft, motion is transmitted from the arm 93 to the link 90 through the bell crank lever which is rotated about its pivot to carry the shaft 82 toward the left and the main driving gear into mesh with one of the auxiliary gears. The cam surface on the cam arms, however, is active in causing rotation of the main driving wheel only during the time that the cor responding locking tooth is in engagement wit 1 the teeth on the cam frame, whereafter the tooth will be released from thecam frame and the locking shaft returned to its normal position b the springs, whereu on the main driving w eel is returned by the spring 86 to its normal position out of' meshing engagement. Upon return of a number key the corresponding cam frame will be rotated rearwardly to bring the teeth thereon beyond the corresponding locking tooth. Thisbackward rotation of the cam frame, however, will produce a sh ht forward rotation of the lockmg shaft and the pivot studs at the end of these arms are disposed within slots at the end of the engaged links, these links and the awl releasing mechanism and the slidin siiaft operating mechanism will not be a ected and will remain stationary.

I shall now describe the mechanism for moving either the forward'oi the reverse aux iliary gear into mesh with the main driving ear.

g Pivoted at its lower end to the supporting plate 34 is a lever 94. A link 95 is pivote to the lever at an intermediate point, and, at its other end is pivoted to the actuating plate 96 (see Fig. 5). The lower end of this plate is bifurcated and engages the grooved collar 97 secured to the actuatin shaft. The upper end of this actuating ate is secured to the reverse ear shaft Which is slidable through the en plates 36 and 37. Near its lower end this actuating late engages with the sliding shaft 85 to wiiich is pivoted the bell crank lever. The plate is not directly connected to this sliding shaft, but has a latitude of motion along the reduced end 98 of this sliding shaft, and I preferably provide for adjusting this degree of relative motion between the plate and sliding shaft by the use of a screw 99 engaging in the end of this sliding shaft, and the relative motion of the plate with res ect to the sliding shaft is de termined by tli the shaft and the head of the screw. A guidin stud 100 extends from the side plate 36 an forms a guideway for the plate. A detent plate 101 may be secured to theside plate 33 and as shown in' Fig. 2 is'provided with thenotches 102 and 103, a spring 104 tending to retain the lever inwhichever notch it is placed. When this lever engages in the left notch 102 the reverse gear 42 is moved tothe left so that the main driving gear can engage only the forward gear, thls forward gear, however, re'maining in mesh with the reverse gear. When the lever is placed in the rightnotch 103 the actuating frame will move to the right the shaft with the reverse gear and the actuating shaft with the main driving wheel to bring the main driving wheel and reverse gear in proper position so that they maymesh upon actuation of the number keys, the movement of the actuating shaft to the right being sufficient to prevent meshin forward gear, and as before stated, with this condition the totalizer gears will be rotated in reverse direction. In other words, when the lever-94 is in the left notch the totalizer mechanism will carry on addition, and when of the arms 75 and 93, but as e distance between the end of of the main driving gear with the this lever isin the right notch the totalizer mechanism willtcarry on subtraction.

A second lever 105 as best shown in Fig; 9 is pivoted to the supporting plate 34 and as a tongue,10 6 adapted for engagement with the arm 107 secured to the lock shaft, a spring 108 tending to ment. The position 0 the arm 107 is such that when the locking shaft is rotated upon de ression of a ke'yv it will become disposed moved. Upon thus releasing the locking tooth the cam frame and the key may return to the normal osition. The actuating shaft and'the main riving gear will also return to their normal positions and the actuated to talizer wheel will also return toits normal position. The key may then be properly struck and thetotalizer wheelwill properly indicate, A third lever 109 in the sha e of a bell crank is pivoted at its elbow to t e side plate 33,'as best shown in Fig. 10. The forward end thereof terminates .in a shoe 110 for engaging the arm 111 extending from the .locking shaft, a spring; 112 tending normally to prevent such engagement. Upon release revent such engage-' of a struck key thejteeth upon the correspondmg cam frame should be returned be. 0nd the corresponding locking tooth. nless this is done the tooth will engagethese teeth and allow the key to be depressed." This lever-109' also performs another very important funcx tion. The rotation of the locking shaft by engagement of the locking the cam frames is depen ed 11 on to carry the main driving wheel into mesh with the auxilia driving gears, but upon actuation of the ever 109, as before stated, the locking teeth are rotated from the path of the cam frame teeth and consequently all the cam' frames may berotated to cause actuation only of the actuating arms. and shaft, but the main drivin 'gearwill not be moved later-all to be carrie into meshing engagementwitli the auxiliary gears and therefore the totalizer mechanism will not be actuated. This is very desirable where the typewriting chine is intended to "be used mits or ca cal cu-lating work, and where it is not deteeth' thereon with uminary acity, which often occurs in the midst of 7 revent subsequent depression of "the key, ut upon actuation of this lever 109 the shoe 110 will engage the arm 111 and will rosirable that the totalizer mechanism should be entirely disengaged upon actuation of the rotating ca 15. Notches 113 and 114 may be provider in, the detent plate 101 for receiving the levers 105 and 109. A fourth lever 115 as shown in Fig. 8 may also be provided connecting with the actuating shaft, as shown, and upon actuation of which the shaft is rotated to hold the actuating arms thereon out of the path of the cam frames. Thus when the lever 115 alone is actuated there may be lateral movement of the main driving gear but not rotational movement thereof, and if the lever 109 alone be actuated there may be rotation of the main driving gear shaft but not lateral movement of the driving member, but if both levers be moved, the main driving shaft and member thereon will remain stationary and the number keys of the machine may be struck to cause actuation only of the cam frames. locking slot 116 may be provided in the detent plate 101 for this fourth lever.

The totalizer mechanism best shownin Fi s. 3, 4, 5 and 7 is contained between the sirfe walls 22 and 23 of theframe 21, these Walls, as before stated, being 'provided at their rear edges with the V-shaped extensions 24 and '25 whichengage in the channels 19 and 20 of the traveling frame. A horizontal shaft 117 extends between the side walls at the front andv near the middle thereof, and rotatably mounted thereon are the number wheels 118 each provided with a gear wheel 119. To the rear of this shaft is another horizontal shaft 120 extending betweenthe side walls and secured thereto. Rotatably mounted on this shaft are a plurality of totalizer gear wheels or receiving wheels 121, each one meshing with the gear of the corresponding number wheel. The lower' part of these gears extends slightly beyondthe lower edge of the side walls of the frame 21,

and as this frame is carried horizontally across the machine and over the forward auxiliary driving gear of the driving mechanism, this-gear W1ll successively mesh with the totalizer gears, and upon depression then of a number key the engaged totalizer wheel will be rotated to revolve the corresponding number wheel a corresponding number of divisions. The totalizer gears are shown as provided with thirty teeth and the gears on the number wheels are provided with ten teeth, making the gearingproportion 3 to 1, and for every one-thir of a revolution of a totalizer gear the number Wheel will turn one revolution. Secured to the left face of each totalizer gear is a second thin gear plate 122 having three teeth 123 displaced 120 degrees, and adjacent to this gear plate is a cam plate 124 having three notches 125 also displaced 120 de rees and disposed directly opposite the teet 123, the diameter of this cam plate being slightly less than that of the gear plate. This gear plate and cam plate constitute part of carry-over mechanism which will presently be de scribed. To the rear of the totalizer gear shaft is the third shaft 126 extending between the side plates, and on this shaft is mounted a set of bell crank levers 127 for supporting the other part of the carry-over mechanism, this consistin of a gear pinion 128 having a pinion whee .129 and a carryover gear wheel 130, these parts being secured together and mounted on a pivot stud 131 extending from the end of the bell crank levers. The teeth adapted to be engaged by the carryover teeth 123 on the gear plate 122, and for every one-thirdof a revolution therefore of the totalizer gear there will be one engage ment by the gear plate 122 with the gear pinion 128 to cause a one tooth advancement thereof. The star wheel is provided with ten circular concave surfaces 132 having the same radius as the cam plate 124, these surfaces being in intimate engagement with the unbroken cam surface until a tooth 123 comes into engagement with the ear pinion 128, and at this instant the note 1 125 corres onding with the engaging tooth 123 wilf become disposed 0p osite one of the oints 133 on the star w eel. During the interval between the teeth 123 one of the circular surfaces of the star wheel will engage the unbroken surface between the corresponding notches 125 of the cam plate and it is impossible for the star wheel to rotate on account of the greater radius at the points 133 but when a notch 125 arrives elow one of these points additional space is afforded for this longer radius and the star wheel may turn and no longer blocks the carry-over apparatus. Thus at every ten advancements of one totalizer gear a tooth 123 will engage the gear pinion 128 on the corresponding carrying-over lever, and at the same instant the star wheel may also rotate, whereupon the carry-over gear which engages the teeth of the next adjacent totalizer gear will cause rotation of this adjacent totalizer wheel. Owing to the dimensions of the gears the adjacent gear wheel will be advanced to cause the engaged number wheel to advance one number. In other words, at each rotation of one number wheel from zero to 9 the next actuation thereof will move it to indicate zero, and at the same instant the carry-over mechanism just described will be actuated to move the next adjacent totalizer number wheel from zero to 1. To afford more compact arrangement of the totalizer mechanisms the bell crank, carry-over and locking mechanism inion gearhas tensup ortin levers are not all mounted on the 'tated, this, however, being ism as the other levers just described, this mechanism, however, engaging the totalizer wheels in front of the mechanisms on the other leversin order to allow compactness. As best shown in Figs. 3, 4, and 7 the teeth on the gear wheels and on the gear plates are so formed that when in mesh there will bea minimum of lost motion and so that the gears will carry just the required distance.

vThe downwardly extending end 135 of each of these bell crank levers is connected through a spring 136 with the spring supportin rod 137 which may also be secured to the si e plates, and the tendency of these springs is to hold the carry-over gearing mechanism and locking star wheels in engagement with the totalizer gear and cam wheels. The pressure between these parts occasioned by the sprin s, however, may be controlled by adjustab e abutment screws 138 extending through the bar 139 secured between the totalizer frame side walls, the upper end of each of these bell crank levers being provided with an abutment projection 140 for engaging one of these adjusting abutment screws.

The ends of the downward extensions-135 of these levers are arranged in a straight horizontal row and pass behind a horizontal detaining bar 141 secured to the driving,

mechanism frame. Each totalizer gear is in mesh with the carry-over gear wheel of the carry-over mechanism associated with the preceding gear wheel. As this carry-over gear is secured to the corresponding star wheel, which is locked against the cam plate of this preceding gear Wheel,'there can be no rotation of this carr -over gear unless the star wheel is remove from such lockin engagement, but to remove the star whee the corresponding bell crank lever must be rorevented b engagement of the foot of -t e bell cran lever with the horizontal detaining bar on the driving mechanism frame. If this carryover gear is thus locked against rotation the engaged totalizer gear will also be locked. Thel lower edge of the detaining bar just preceding the forward auxiliary driving gear is cutaway a distance and when the foot of an bell crank lever arrives under this part the bell crank lever may be rotated to carry its star wheel from looking engagement; Thus when the desired totalizer gear is in'mesh with the forward driving gear, the foot of the preceding bell crank'lever will be at the cut-away part of the detaining bar, and upon depression then of a number ke the engaged totalizer wheel may rotate. t is, however, very important that the carry-over gear on this "preceding lever should be entirely clear 'of meshing engagement with the actuated gean wheel, otherwise the entire carry-over gear would become deranged. To revent this a releasing arm 142 is secure to the rocker shaft of the drivm mechanism,

.it being before stated that t is rock shaft totalizer mechanism, the result being that the upper part of this lever will be moved to carrythe carry-over gear entirely clear from meshing engagement with the gear wheel to be rotated, and when this gear Wheel is finall rotated upon further depression of the ey, there wi 1 be no resultant motion Whatever of the carry-over mechanism. Toprevent derangement, however, of the carry-over and locking parts when thus carried out of engagement y virtue of the releasing arm, atooth or detent 143 is provided for engaging between the teeth of the carry-over gear as it is raised out of engagement with the gear wheel to be actuated, and this tooth may conveniently form part of the bell crank lever corresponding to the gear wheel to be actuated, and thus a tooth e ctending from one of'the'levers will revent displacement of the carry-over and ocki ng mechanism carried by the preceding lever. The detaining bar, the releasing arm, the star .wheel mechanism and these detent teeth all cooperate to lock the various parts a 'ainst any movements other than those wiich must necessarily result to produce the in the same horizontal row with the ower ends of the carry-over levers to be also engaged by the releasing lever. The upper arm of this small bell crank lever normally engages the teeth of this first totalizer gear by virtue of a spring 146. The lower end 145 of this lever is bent'a distance toward the right to be disposed opposite the cut-away portion of the retaining bar'wh en this first totalizer gear is in mesh with the'forward drivigear, and thus when the key is actuproper and accurate rotation of the totalizer bl mechanism associated with this carry over ated t flreleasing arm will engage this end 136 i 145 and will release theother end of the lever from the first totalizer gear, whereupon this gear may be rotated. I

The number wheels and the totalizer gears are placed in groups, usually three in a group, 6. g.: units, thousands and millions, and so on, there being a space between each group of totalizer gears equal to twice the space of the typewriter spacing distance, and thus when the numbers are printed on the sheet there will be a greater space between these groups, it being thenunnecessary to print periods or commas between the groups. Thus the operator when striking off a sum on the keys starts, say in the thousands column, and strikes the numbers in thepthousands division whereupon she must strike the spacing key before proceeding to strike off the numbers in the hundreds group and so on.

If she should neglect to strike the spacing key between the groups confusion will result,

and I therefore provide preventative means in the shape of a late or bar 147 secured to the side plates of t e totalizer frame and having depending teeth which are disposed in register with the spaces between thelgroups and also adapted to pass between teeth of the forward driving gear of the driving mechanism. Thus when a group spacing division is opposite the forward driving wheel the corresponding tooth will engage the teeth of this driving wheel and prevent its rotation should a number key by mistake be struck, and of course, the totalizing device will be inactive until the spacing key is struck to move the tooth from engagement with the driving wheel.

To cause the teeth of the totalizer gears to readily mesh with the forward driving gear as the totalizer frame is reciprocated, the teeth of the forward driving gear are, extended downwardly a distance along the sides of the gear and are beveled, serving thus to guide the totalizer gear teeth into a proper Also to assist in ore they reach the forward driving gear, a guiding edge 148 is secured to the right wall of the driving mechanism frame. A cover 149 may also be provided for the totalizer frame having a row of openings 150 through which the characters on the number wheels are visible.

As before stated, the totalizer frame is adjustable along the traveling frame 10, the locking lever 26 and the slots 28 serving for this purpose and the starting position of the totalizer may be adjusted to correspond with that of the typewriting machine. To render it unnecessary for the operator to strike off the spacing on the spacing bar of the typewriter to bring the desired totalizer gear into engagement with the driving gear, tabulating mechanism maybe used for this purpose and Figs. 1 and 11 show the well known form of tabulating mechanism em ployed inconjunction with typewriters. The tabulating' keys 151 are disposed in a horizontal row in the front of the machine and connect by rods 152 with levers 153 pivoted at 154 and terminating in their upper end in the escapement fingers 155. Mounted on the traveling carriage of the typewriter is a bar 156 provided with teeth 1.57 whose pitch is equal to the pitch of the escapement teeth of the typewriter. The escapement fingers 155 are. grouped in the rear of this actuating bar andare spaced to correspond with the teeth 157. Abutments 158 are adapted for adjustable insertion in the teeth of the rack 156 and are spaced thereon to correspond with the spacing between the totalizer gears and the starting point of the typewriting machine. By the proper spacing of these abutments it is necessary only for the'operator to depress the proper tabulator key and the escapement carriage will travel'directly to bring the corresponding totalizer gear into mesh with the driving gear.

The operation of the device is now apparent. .For illustration, suppose it is de-- sired to add-a column of sums, then, after the totalizer frame is properly adjusted so that the printed numbers will ap ear at the proper osition on the sheet, and the totalizer numer wheels all indicate zero, the pro er tabulating key for the first sumis struc whereafter the number keys of the machine are successively struck to place the remaining numbers of the sum on the totalizers. The escapement carriage is then returned to its initial position, the printing roller being advanced the required distance at the same time. The proper tabulating key is struck for the seeond sum and the proper number keys struckj this second sum ap caring on the sheet under the first sum and in proper alinement therewith, this second sum, however, being added to the first on the totalizer. In thesame manner the remaining sums are accumulated on the totalizer and rinted in alinement on the sheet. The totalizer at the end of the calculation will indicate the total sum of all the numbers and this sum is then placed below the column of sums on the sheet, the proper mechanism being first, however, actuated to reverse the rotation of the driving mechanism and the result will be that the totalizer number wheels will be re- .turned to zero and the accumulated sum independent machine for adding or subtract-' and thus several columns of sums added at practically the same time.

I thus produce a ver usefuland efficient device for producing ca culations of addition and subtraction which may beremovably connected with any typewriting machine without in any way interfering with the ordinary operation of the machine;

will be absolute certaintyof operation thereof without any lost motion or with the least amount of motion short of or in excess of that intended. The construction and arrangement of these parts are also very sim le, compact and neat in appearance, No a ditional keys are necessary for the ty ewriting machine, the calculating being a accomplished by use of the number keys which apear on the ty ewriter. Although several evers are provi ed for the mechanism itself they are very seldom used, the one most used being the lever provided for adjusting the mechanism for either addition or subtraction, the other levers being used only for resetting or releasing arts when mistakes have been made. The evice may be used as an ing andit need not necessarily be used in connection with a typewriting machine.

Attention is hereby directed to my copending application filed Oct. 23, 1905, Serial No. 283,887, wherein I claim some of the devices and combinations of devices herein shown.

Many changes also might be made in the exacteonstruction, arrangement and operation of the parts without departing from the spirit and scope of my invention, and I do not therefore, wish .to be limited to the exact disclosure as shown, but

I claim as new and desire to secure by Letters Patent: r

1. In a calculating machine, the combination with mechanism for indicating calculations, of actuating gear wheels for said mech-;

anism, a driving gear wheel for engaging said mechanism gear wheels, a mam driving member normally out of mesh with said driving gear, keys for said machine, and

means upon first actuation of a key for causing said main driving member to be moved laterally to another plane into mesh with said driving gear and upon further actuation of said key to cause rotation of said driving gear and of the mechanism gears.

2. In a calculating machine, the combination with calculating mechanism having actuation gears, of a driving gear for engaging said calculating gears, a main driving member normally out of mesh with said driving gear, keys'for said machine, means upon depression of one, of said keys for causin said main driving member to be first moved aterally to another plane into mesh with the driving gear and thento be rotated to cause ac- All the various mechanisms are mounted so that there tuation of the driving gear and ofthe calcul-ating gears, and'means for subsequently causing said main driving member to be removed from meshing engagement with said driving ear. g 3. In a calculating machine, the combination with calculating mechanism, of a main driving member for causing actuation of said calculating mechanism, said driving member being normally out of engagement with said calculating mechanism, keys for said machine, and means upon depression of a key for causing said driving member to be first moved laterally to another plane into engagement with said calculating mechanism and then to be rotated to cause actuation of said calculating mechanism.

4. In a. calculating machine, the combina tion with calculating mechanism, of a main driving member for causing actuation of said calculating mechanism, said. driving member being normally out of engagement with said calculating mechanism, keys for said machine, means upon depression ofa key for causing said driving member to be first moved to another plane into engagement with said calculating mechanism and then to be rotated to cause actuation of said calculatin mechanism, and means upon release 0 a depressed key for causing said driving member to move to its normal plane to become disengaged from the calculating mechanism. 7 i

5. In a calculating machine, the combination with calculating mechanism, of a maindriving member adapted for causing actuation thereof, said. driving member being normall out of engagement with said mechanism, eys for said machine, means upon actuation of a key for causing first lateral movement of said main driving member to bring said member into engagement with the calculating mechanism, means upon further actuation of said key for causing rotation of said driving member to cause actuation of 1 the'calculating mechanism, and means after rotation of said member for moving said member laterally out of engagement with said calculatin mechanism. r

6. Ina calcu ating machine, the combina- 115 tion with indicating mechanism, of a main driving member for causing actuation of said indicating mechanism, sald member being normally out of driving engagement with] said mechanism, means for causing lateral 120 motion ofsaid member to bring said mem-' ber into engagementwith said mechanism, means thereafter for rotating said rotatable member to cause actuation of indicating mechanism parts, and means after such ac 125 tuation of indicating mechanism for returning said member to its former position out of driving relation with said mechanism.

'7. In a calculating machine, the combination with indicating mechanism, of a main movement, means upon actuation of a keyfor causing first a lateral movement of said driving member to bring said memberinto driving relat1on with the 1nd1cat1ng mechanism, means upon further actuation of vsaid key to cause rotation of said shaft with said member to ing mechamsm, and means after such rotation for again removing said member from driving relation with the mechanism. 8. In a calculating machine, the combination with-indicating mechanism, of actuating keys, a shaft, mechanism intervening between said shaft and said keys, a main driving member pivoted to said shaft and adapted to swing laterally thereon, means for normally retalning said member out of driving relation with the indicating mechanism, and means upon depression of a key for causing said driving member to befirst swung laterally into driving relation with the indicating mechanism, continued actuation of said key causing rotation of said shaft and said driv-' ing member whereby the indicating mechanism is actuated. I d

9, In a calculating machine, the combination with indicating mechanism, of a driving member adapted for lateral and rotatable movement and normallv out of driving relation with the mechanism, keys for the machine associated with said main driving member, actuation of a key causing lateral movement of said member into driving relation with the indicating mechanism, and then rotation of said member to cause actuation of the indicating mechanism.

10. In a calculating machine, the combination with indicatin mechanism, of a driving member adapted for lateral and rotatable movement and normally out of driving relation with the mechanism, keys for the machine associated, with said main driving member, actuation of a key causing lateral movement of said member into driving relation with the indicating mechanismyand then rotation of said member to cause actuation of the indicating mechanism, and'means for determining in which direction the indicating mechanism shall be actuated.

11. In a calculating machine, the combination with indicating mechanism having actuating gear wheels, of a laterally movable main driving member, a driving gear for meshing with said indicatin mechanism gear wheels, a laterally movab e reversing gear wheel, said driving member normally upon actuation being in mesh with the driving gear to cause rotation thereof and of the actuating gear wheels in a forward direction, and means for laterally moving both the main driving member and thereversing gear into mesh with each other whereby upon actuaroduce actuation of the indicat-- tion of the driving member the actuating gear Wheels will be moved in a reversed direction.

12. In a calculating machine, the combina tion with indicating mechanism having actuating gear wheels, of a main drivlng member, a forward gear for meshin with said indicating mechanism gear whee s, a reverse gear in.

mesh with the forward gear, said main driving member upon actuation being normally in mesh with the forward gear, and means for causing motion of both the reverse gear and the main driving member into mesh with each other and the main driving member out of mesh with the forward gear.

13. In a calculating machine, the combination with indicating mechanism having actuating gear wheels, of a main driving member having both lateral and rotational movement,

' a forward driving gear for meshing with the indicating mechanlsm gear wheels, 9. reverse gear wheel having meshing engagement with saidforward gear, keys for the machine, means upon actuation of a key for causing first the lateral motion of the main driving member into mesh with theforward gear and then rotational movementto cause rotation of the forward gear and indicating mechanism gear wheels, and means for moving the reverse gear and the main drivin member laterally whereby the driving mem er is carried from meshing engagement with the main driving gear and into meshing engagement with the reverse gear. I v

14. In a calculating machine, the combination with indicating mechanism having'actuating gear wheels, of a forwardgear for meshing with said gear wheels, a reverse gear meshing with said forward gear, a main driving member, a pivot shaftfor said driving member, keys associated with said driving member shaft, said driving member being adapted to swing laterally on said shaft,

.means normally upon depression of akey for first causing said driving member to swing laterally into mesh with the forward driving gear and then to be rotated to cause rotation of the forward gear and indicating mechanism gear wheels, and means for causing lateral movement of the reverse gear and of the main driving gear shaft whereby subse uent actuation of a key will cause first latera motion of the main driving member to mesh only with the reverse gear and to be rotated to cause rotation of the reversegear and reverse rotation of the indicating mechanism gear wheels. i!

15. In a calculating machine, the combination with indicating mechanism having actuating gear wheels, of a forward driving gear said shaft, said driving member upon actuation of a key being normally in mesh with the forward driving gear to cause forward actuation of the indicating mechanism, and means for moving the reverse gear and the shaft with the main driving member whereby upon subsequent actuation of a key the main member will be inimesh with the reversekeys for said machine, cam frames secured to said keys, and mechanism associated. with said cam frames and said main driving member, actuation of a key primarily causing engagement of the corresponding cam frame with said mechanism to move thedriving member into engagement with the gearing mechanism, further actuation of said key causing engagement of the cam frame with the corresponding actuating arm whereby the main driving member is rotated and the indicating mechanism actuated through the gearing meehanism.

17. In a calculating machine, the combination with traveling indicating mechanism, of stationary driving mechanism therefor, gearing mechanism for engagement with the indieating mechanism, a main driving member adapted for engagement with said gearing mechanism, an actuating shaft to which said driving member is pivoted and from which it may swing laterally, actuating arms extending from said actuating shaft, keys forsaid machine, a pivot shaft, cam frames on said pivotshaft and connected with-said keys for engagement with said actuating arms, a locking shaft, teeth extending from said locking shaft for engagement with said cam frames, and mechanism intervening between said lock shaft and the freeend of said main driving member, depression of a key causing first actuation of said lock shaft and the intervening mechanism to swing the main driving member into mesh with vsaid gearing mechanism, then causing engagement of the,

cam frame with the actuating arm to cause rotation of the actuating shaft and the main driving member, whereby said indicating mechanism is actuated.

18. In a calculating machine, the combination with traveling indictaing mechanism having rotatable members,- of stationary driving mechanism, gearing for said driving i with sai mechanism adapted for engagement with the indicating mechanism, a main driving member, an actuating shaft with which said driving member may rotate and to which it is pivoted to swing laterally, actuating arms extending from said actuating shaft, a pivot shaft, cam frames pivoted to said pivot-shaft for engagement with said actuatmgarms to cause rotation of the actuating shaft and the main driving member, keys for said machine connected with said cam frames, a locking shaft, lever mechanism connected with sai shaft and with the free end of the swinging main drivin member, means for normally retaining said locking shaft and said lever mechanism in position to hold the main driving member out of meshing engagement with said gearing mechanism, teeth extendin from said locking shaft for engagement with said cam frames, actuation of a key causing rotation of the corresponding cam frame, rotation of said cam frame causin'g first a slight rotation of the locking shaft, whereby the lever mechanism is actuated to swing the free end of the main driving member intomeshing engagement with said gearing mechanism and then upon engagementof said cam frame with the corresponding actuating arm causing rotation of the actuating shaft and the main driving member, whereby the gearing mechanism is rotated to actuate the indicating mechanism. v

19. In a calculating machine, the combination with traveling indicating mechanism having rotatable actuating parts, of stationary driving mechanism, gearing mechanism for engaging with said indicating mechanism, a main driving member for causing actuation of said gearing mechanism, an actuating shaft to which said main driving member is pivoted and whereon it may swing laterally, actuating arms extending from said actuating shaft, a pivot shaft,'cam frames pivoted to said pivot shaft and connected with keys for said machine, teeth on said cam frames, a lockin shaft, lever mechanism'conn'ected locking shaft and the free end of said swinging main driving member, teeth extending from' said locking shaft for engagement with the teeth on said cam frames, means for normally retaining said locking shaft and the lever mechanism in position to .hold the main driving member out of engagement with the gearin mechanism, and means upon actuation of a iey for causing engagement of the corresponding cam frame with a corresponding locking tooth on the locking shaft to cause rotation of said lockin shaft and the lever mechanism, whereby the free end of the main driving member is moved to bring said member into meshwith the gear ing mechanism, further depression of said key causing said cam frame to be brought into engagement with the corresponding actuating arm, whereby the actuating shaft and its original the main driving member are rotated to cause rotation of the gearing mechanism and actuation of the indicatin mechanism, said teeth on the lock shaft an I said teeth on the cam frame cooperating to form pawl and ratchet mechanism which prevents release of a key until depressed a predetermined distance and which prevents subse uent dc tion with traveling indicating mechanism, of

stationary driving mechanism, a frameyin which said driving mechanism is dis osed, an

intermediate driving gear pivote in said frame and adapted foreng'ageinent with the actuatin parts of the indicating mechanism,

a main riving segmental gear adapted for engagement with said intermediate gear, an

actuating shaft, said main driving gear bein pivoted to said shaft to rotate therewith an to swing laterally thereon, keys for said machine, a pivot shaft, cam frames pivoted to said pivot shaft and connected with said keys, actuating arms extending from said actuating shaft and associated with-said cam frames, a circular slot through the free end of said main driving member, a horizontal sliding shaft having a groove engaging in said slot, a locking shaft, an arm extending from said locking shaft, a bell crank lever connected between said arm and said sliding shaft, and teethextendin from said locking shaft for engagement wit 1 the corresponding cam frames, actuationof a key'causing rotation of the corresponding cam frame whereby the lock shaft is first rotated to cause actuation of the bell ,crank lever and the sliding shaft to carry the main driving ear into mesh with the intermediate gear, an whereby the corresponding actuating arm is subsequently engaged to cause rotation of the actuating shaft and the main driving member, where-' by the indicating mechanism is actuated,

said main driving member being returned to position out of mesh with said gear upon re cam frame.

21. In a calculating machine, the combination with traveling indicating mechanism, of

' stationar driving mechanism, an intermediate gear or said driving mechanism for engaging directlywith the actuating parts of the indicating mechanism, an actuatin shaft for the driving mechanism, a segmenta gear pivoted to the actuating shaft to rotate therewith and to swing laterally thereon, a circular slotthrou h the free end of said segmental gear, a sli inglshaft having a groove engaging said slot, afllocking shaft, a bell crank] pivoted at its. elbow to the driving mechanism frame, one end of said crank engaging said sliding shaft and the other end of said crank connected with said locking shaft, keys for said machine, cam frames ease of the lock shaft from the connected with said keys and pivoted to a pivot shaft, actuating arms extending from said actuating shaft for engagement with said locking shaft for enga 'ement with said cam frames during part of 516i? rotation, depression of a key causing first a rotation of the locking shaft, whereby the bell crank and sliding shaft are moved to carry the segmental gear into mesh with theintermediate driving gear, the engaged cam frame then causing rotation of the-corres ondin acby the segmental gear is rotated and the indicatin mechanism actuated.

' 22. n a calculatin machine, the combination with traveling indicating mechanism, of stationary drivin mechanism, gearing mechanism for said driving mechanism for engaging withthe actuating parts of the inber for engagin said gearing mechanismto cause rotation t ereof, an actuating shaft to which said main member is pivoted, an actuating arm extending'from said shaft, a key for said machine, a cam frame connected with said key and pivoted to a pivot shaft, a locking shaft, a tooth extendinglfrom said locking shaft for engagement wit said locking frame, an arm extending from said-locking shaft, a pawl normally engaging said gearing mechanism to prevent rotation thereof, and lever mechanism intervening between said arm and said awl, depression of said key causing first a s ight rotation of the lock shaft whereby said lever mechanism is actuatedto release the 'pawl from, said gearing mechanism, further depression of said key causing active engagement of said cam frame with said actuating arm whereby said actuating shaft and said main actuating member are rotated tocause rotation of the released gearing mechanism and the indicating. mechanism. I

23. In a calculating machine, the combination with a traveling indicator, of stationary driving mechanism, gearing mechanism .for said driving mechanism for en agement with the actuating parts of the in icator, a main driving member adapted to mesh with said earin'g mechanism, an actuating shaft for said main driving member, an actuatin machine, a cam frame connected with said key and pivoted to a pivotshaft and adapted for engagement with said actuating arm, pawl mechanism normally engaging said gearing mechanismlto prevent rotation thereof, a locking shaft, a tooth extending from said locking shaft for engagement with said cam frame, an arm extending from said locking shazft, and lever'mechanism connected with said arm and withsaid'pawl mechanism, depression of said key causin actuation of the cam frame to first rotate t e-locking shaft a said cam frames, and teeth extending from tuating arm and the actuating s aft, w eredicating mechanism, a main actuating memarm extending from said shaft, a key for sai distance whereby said lever mechanism is actuated to release the pawl mechanism to allow rotation of the gearm mechanism, further actuation of said cam Irame causing engagement thereof with the actuating arm, whereby said actuating shaft and main driving member are rotated and the released gearing mechanism rotated to actuate the indicating mechanism, the engagement of said tooth with said cam frame being such that the key will be locked against restoration until depressed its full distance, and locked against subsequent de ression until fully restored.

24. In a ca culating machine, the combination with a traveling indicator, of stationary driving mechanism, gearing mechanism for said driving mechanism adapted for engagement with .the actuating parts of the indicator, a main driving member in the form of a segmental gear for causing rotation of said gearing mechanism, an actuating shaft to which said main driving member is ivoted to rotate therewith and upon which it may swing laterally, an actuating arm extending from said actuating shaft, a key for said machine, a cam frame connected with said key and ivoted to a pivot shaft for engagement with said actuating arm, a locking shaft, a tooth extending from said locking shaft for engagement with said'cam frame, bell crank mechanism connected with said locking shaft and with the free end of said main driving member, pawl mechanism normally engaging said gearing mechanism to prevent rotation thereof, lever mechanism connected with said locking shaft and with said pawl mechanism, means for normall retaining said main driving member out 0 engagement with the gearing mechanism, depression of said key causing said cam frame to e actuated to rotate the locking shaft a'dis-.

tance wherebysaid pawl mechanism is'actuated to release the pawl from the gearing mechanism and whereby said bell crank mechanism is actuated to swing the main driving member into mesh. with said earing mechanism, further depression of t e key causing continued actuation of the cam frame which then e gages said-actuating arm to cause rotatio of the main driving member whereby said gearing mechanism 1s rotated and the indicating mechanism actuated.v

25. In a calculating machine, the combination with a traveling indicator, of stationary driving mechanism, an intermediate driving gear for said driving mechanism for directly engaging with the actuating mechanism ofthe indicator, a main driving member inthe form of a segmental gear for engaging said intermediate drivin gear, a reverse gear at all tiines in mesh wlth'said intermediate driving gear, an actuating shaft for said [main driving member, said main driving member being pivoted to said shaft to rotate therewith and to swing laterally thereon, a

key for said machine, a cam frame connected with said key and pivoted on a pivot shaft, an actuating arm extending from the actuating shaft for engagement by the cam frame, a locking shaft, a tooth extending from said locking shaft for engagement with said cam frame upon actuation of the key, pawl mechanism normally engaging said reverse gear to prevent rotation of the intermediate driving gear, lever mechanism connected with said locking shaft and with said pawl mechanism, means for withdrawing the pawl from said reverse gear, depression of said key causing first a slight rotation of the locking shaft, whereby the lever mechanism is actuated to release the pawl from the reverse gear and to allow actuationof the intermediate driving gear, continued depression of said key causing the actuating arm to be enga ed by the cam frame whereby the main riving member is rotated to cause rotation of the intermediate drivin gear and actuation of the indicating mechanism, and means for moving said reverse gear and said main driving member, whereby upon another depression of said key said main driving member will mesh with the reversing gear, whereby the direction of actuation of the indicating mechanism is reversed.

26. In a calculating machine, the combination witha traveling indicator, of stationary driving mechanism, gearing mechanism for engaging with the mechanism of the indicator, a main driving member for engaging said gearing mechanism, means for normally retaining said main driving mechanism in a.

normal plane out of engagement with said gearing mechanism, an actuating key, means upon actuation of said key for causing said main driving-member to be first brought to another plane into engagement with the gearing mechanism and then rotated to cause rotation of the gearing mechanism and actuation of the indicating mechanism, means for normally locking said gearing mechanism against rotation, and means upon moving said main driving member into engagement with said gearing mechanism for releasing said gearing mechanism.

' 27. In a calculating machine, the combination with a traveling indicator, of stationary driving mechanism, gearing mechanism for engaging, with the mechanism of'the indicator, a main driving member for engaging said gearing mechanism, means for normally retaining said main driving mechanism in a normal plane out of engagement with said gearing mechanism, an actuating key, means upon actuation of said key for causlng said main driving member to be first brought to another plane into engagement with the gearing mechanism and then rotated to cause rotation of the caring mechanism and actuation of the indicating mechanism, means for normally locking said gearing mechanism againstv rotation, means uponmoving said main driving member into engagement with said gearinc mechanism for releasing said gearing mechanism, and means for adjusting said gearing mechanism to cause either forward or reverse actuation of the indicator mechanism.

28. In a calculatin machine, the combinationlwith a trave ing indicator, of stationary driving mechanism, gearing mechanism for said driving mechanism for engagement with theindicator mechanism, a main driving member having rotatable and lateral swinging motion, means for normally locking said gearing mechanism against rotation, means for normally retaining said main driving member out of engagement with said gearing mechanism, a key for said machine, means upon actuation of said key for first causing a lateral swing of said main driving'member into engagement with said gearing mechanism, and means for at the same time causing release of the gearing mechanism, continued actuation of said key ber w then causing rotation of said main driving.

member whereby the indicating mechanism is actuated upon rotation of the gearing.

chine, means upon actuation of said key for first causing a lateral swing of said main driving'member into engagement with said gearing mechanism, means for at the same time causing. release of the gearing mechanism, continued actuation of said key then causing rotation of said main driving memereby the indicating mechanism is actuated, and 1 means for adjustin said gearing mechanism and said main riving member to roduce either forward or reverse actuation 0 said indicator mechanism.

30. In a calculatin machine, the com-' bination with a trave ing indicator, of stationary drivin 4 mechanism, gearing mechanism for sai drivin mechanism for engagement with the in icator mechanism, a main driving member having rotatable and lateral swinging motiommeans for normally locking said gearing mechanism against rotation, means for normally retaining said main driving member out "of engagement with said gearing mechanism, a ke for said machine, means u 'on actuation 0 said key for first causing a ateral swing of said main driving member into'engagement with said gearing mechanism, means for at the same time causing release of the gearing mechanism, continued actuation of said key then causing rotation'of said main driving member whereby the indicating mechanism is actuated upon rotation of the earing mechanism, and means for preventing restoration of an actuated key until actuated its full distance.

31. In a calculatin machine, the combination with a trave ing indicator, of stationary driving mechanism, gearing mechanism for said driving mechanism for engagement with the indicator mechanism, a -main driving member having rotatable and lateral swinging motion, means for nor mally locking said earing mechanism against rotation, means or normall retaining said main driving member out o engagement with said gearing mechanism, a key for said machine, means upon actuation of said key for first causing a lateral swing of said main driving member into engagement with said gearing mechanism, means for at the same time c'ausin release of the gearing mechanism, continue actuation of said key then causing rotation of said main driving member whereby the indicating mechanism is actuated upon rotation of the earing mechanism, means for restoring t e depressed key, and means for preventing subsequent depression of said key until, fully restored to its normal position.

32. In a calculating machine, the combination with a traveling indicator, of stationary driving mechanism, gearing mechanism for said driving mechanism for engagement with the indicator mechanism, a main driving member having rotatable and lateral swinging motion, means for normally locking said gearing mechanism against rotation, means for normally retaining said main driv- "ing member out of engagement with saidgearing mechanism, a key for said machine, means upon actuation of said key for first causing a lateral swing of said main driving member into engagement with said gearing mechanism, means for at the same time causing release of the earing mechanism, continued actuation 0%. said key then causing rotation of said main driving member whereby the indicatin mechanism is actuated upon Yrotation of t e gearing mechanism, means for restoring the depressed key to its normal position, means for locking said key against subsequent depression upon failure to restore the key to its normal position, and lever mechanism for releasing said locking means to allow subse uent depression of the key.

33. In a ca culating machine, the combination with a traveling indicator, of stationary driving mechanism, gearing mechanism for said driving mechanism for engagement with the indicator mechanism, a main drivlng member having rotatable and lateral swinging motion, means for normally locking said gearing mechanism against rotation,

means for normally retaining said main driving member out of engagement with said gearing mechanisn1,.a key for said'machme, means upon actuation of said key for fi rst causing a lateral swing of said main driving member into engagement with said gearing mechanism, means for at the same time causing release of the gearing mechanism, continued actuation of said key then causing rotation of said main drivingmember whereby the indicating mechanism is actuated upon rotation of the gearing mechanism, means for locking said key against restoration unless depressed the proper distance, and lever mechanism for releasing said locking means to allow restoration of the key.

34 In a calculating machine, the combibination with a traveling totalizer frame, of a driving gear, driving mechanism intervening between said driving gear and the keys of the machine, a row of totalizer wheels mounted in said totalizer frame and adapted to mesh with the driving gear as the totalizer frame travels, number wheels for said totalizer mechanism, levers for said totalizer mechanism, carry-over mechanism carried by each lever and engaging with adjacent totalizer gears, locking mechanism mounted on said levers and with the totalizer gears, means associated with. the driving mechanism for en-v gaging said levers to hold them in looking engagement with the totalizer gears to pres vent rotation thereof, and means associated with said driving mechanism and actuated upon depression of a key for engaging the lever associated with the totalizer gear in mesh with the driving gear whereby the looking mechanism is released and rotation of the gear allowed.

35. In a calculating machine, the combination with a traveling totalizer frame, of stationary driving mechanism connected with the keys of the machine, a driving gear for said driving mechanism, a row of totalizer gears mounted in said totalizer frame and adapted to mesh successively with said drivingtgcz-ir as said totalizer frame travels, a nunrber wheel connected with each totalizer gear, a carry-over gear plate secured to each totalizer gear, a locking cam secured to each totalizer gear, a lever mounted in said frame for each totalizer gear, a carry-over pinion pivoted to one end of said lever to be engaged by the corresponding carry-over gear, a locking wheel secured to said carryover pinion. for engagement with the locking cam on the corresponding totalizer gear, a

carry-over gearseeured to said carry-over pinion for engaging the adjacent totalizer gear, means for normally preventing actuation of said levers whereby the locking mech anism is maintained in engagement and the totalizer gears prevented from rotating,

means adapted'upon .actuationof a key for removing the lever and locking mechanism from the totalizer gear in mesh with the driving gear whereby said totalizer gear may be rotated.

36. In a calculating machine, the combination with a totalizer frame adapted to travel horizontally, of a stationary driving gear, driving mechanism intervening between said driving gear and the keys of the machine, a horizontal row of totalizer gears mounted on thetotalizer frame and adapted to successively mesh with the driving gear to be rotated upon actuation of a corresponding key, an indicating number wheel associated with each totalizer gear, a carry-over gear plate secured to each totalizer gear, a locking cam secured to each totalizer gear, said cam being in the form of a circular disk having circular peripheral notches, a carryover pinion for each gear plate, a carry-over gear connected with the carry-over pinion and meshing with the adjacent totalizer gear, a star wheel secured to the carry-over pinion and engaging the locking cam, said star wheel and locking cam preventing rotation of the carry-over pinion by the carry-over gear until a point of said star wheel engages in one of. the cam notches, means for normally maintaining thestar wheel in engages ment with the cam and the carry-over gear in engagement with the adjacent totalizer gear, whereby said adjacent gear wheel is normally locked against rotation when in mesh with the driving gear, and means upon actuation of a key for releasing said adjacent gear from said carry-ovcr gear and locking mechanism, whereby said adjacent gear may be rotated.

37. In a calculating machine, the combination with a totalizer frame adapted to travel horizontally, of a stationary driving gear, driving mechanism intervening between said driving gear and the keys of the machine, a horizontal row of totalizer gears mounted in said totalizer frame and adapted to mesh with the driving gear, a number wheel connected with each totalizer gear, a carry-over gear plate secured to each totalizer gear, a locking cam secured to each totalizer wheel, said cam being in the form of a circular disk having peripheral notches coinciding with the teeth on the carry-over gear plate, a carry-over pinionplate adapted to be actuated by the teeth on the carry-over gear plate, a carry-over pinion secured to the carry over pinion plate and meshing with the adjacent totalizer gear, a star wheel secured to said carry-over pinion plate, said star wheel having circular notches having a radius equal to that of the locking cam,

means for normally retaining the carry-over pinion plate star wheel and carry-over pinion respectively in engagement with the and l carry-over gear plate, locking cam and ad 

